In order for you to play Serious Sam 3: BFE on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Linux Ubuntu 12.04
Processor (CPU):
Dual-core from Intel or AMD at 2.8 GHz
Memory (RAM):
2GB
Graphics Card:
nVidia GeForce 8600/9600GT, ATI/AMD Radeon HD2600/3600 (Graphic drivers: nVidia 310, AMD 12.11)
OpenGL:
2.1
Hard Drive:
4GB free hard drive space
Sound:
OpenAL Compatible Sound Card
In order to play Serious Sam 3: BFE on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Linux Ubuntu 12.04
Processor (CPU):
Quad-core from Intel (i5-series) or AMD (Phenom II) at 3.0 GHz
Memory (RAM):
4GB
Graphics Card:
nVidia GeForce 280/460 GTX, ATI/AMD Radeon HD 4870/5770 (Graphic drivers: nVidia 310, AMD 12.11)
OpenGL:
2.1
Hard Drive:
4GB free hard drive space
Sound:
OpenAL Compatible Sound Card